Grasper Tracting Suture Thread for Large Wound Closure
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Solution Overview
Problem
Endoscopic submucosal dissection (ESD) procedures often result in large mucosal defects that cannot be effectively closed using traditional methods like clips or suturing due to the size of the wounds, necessitating a more efficient method for closing tubular organ wounds.
Innovation Solution
A method utilizing a suture thread attached to a suture needle, where a grasper is used to tract the thread through surrounding tissues, allowing for the closure of wounds by repeatedly advancing and retracting the thread along the longitudinal axis of the grasper, enabling the passage of the thread through multiple tissue points to secure the wound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If clips are used to close mucosal defects, then the closure process is simple, but large wounds cannot be effectively closed
Solution Approach 1:
The suture thread is divided into multiple segments or parts that can be grasped and manipulated sequentially by the grasper. This segmentation allows the thread to be tracted through multiple tissue points, enabling effective closure of large wounds while maintaining a relatively simple device structure.
Solution Approach 2:
The grasper moves along the longitudinal axis to tract the suture thread through tissue in a linear dimensional path, rather than requiring complex bending or radial movements. This dimensional approach simplifies the device design while achieving effective wound closure.
2Reliability
If suturing is performed to close large wounds, then effective closure is achieved, but the operation becomes complex and time-consuming
Solution Approach 1:
The grasper combines multiple functions: it grasps the suture thread, moves along the longitudinal axis to tract the thread through tissue, and secures the wound. This merging of functions into a single device simplifies the overall operation while maintaining effective wound closure.
Solution Approach 2:
The grasper serves as a universal tool that can grasp, tract, and manipulate the suture thread through multiple tissue points in sequence, eliminating the need for separate instruments for each step of the suturing process.
3Productivity
If a grasper is used to tract the suture thread along the longitudinal axis, then the wound closure is efficient and secure, but the device requires precise positioning
Solution Approach 1:
The grasper is designed to move dynamically along the longitudinal axis, allowing it to tract the suture thread through tissue by sequential movement rather than requiring precise static positioning. This dynamic approach improves efficiency while reducing positioning precision requirements.
Data Source
AI summary
A method for closing a wound in a tubular organ using a suture thread attached to a suture needle. The method includes grasping a first part of the suture thread by a grasper inserted in the tubular organ after the suture thread has been passed through tissue surrounding the wound at a first position; moving the first part away from the first position by moving the grasper grasping the first part along a longitudinal axis of the grasper; grasping a second part of the suture thread located between the first part and the first position by the grasper; and moving the second part away from the first position by moving the grasper grasping the second part along the longitudinal axis of the grasper.